Interesting Fact - Lens Resolving Strength

Recently, this topic has cropped up across my regular dialog with fellow enthusiasts - Resolving power of lens versus the camera sensor.

The resolving power of a lens is a measure of its ability to closely spaced objects so they are recognizable as individual objects. It is determined by photographing a series of closely spaced lines, measuring the spacing between the most closely spaced lines that appear separate on film. The resolving power is expressed as the number of lines pairs per millimeter.